On this blog I sorted known rare drops and how many bosses I had to kill to get rare items. Remember that some kind of rare items have set own chance to drop like El Cadejo's Claw and Slaith's Chew Toy (around 1:4) or Eddings's Tumor (seems to be 1:1, so dropped always) and others have random chance to drop.
Also remember that this blog serves as an exemplary information to get all rare items and number of kills means how many kills took to me to get them. That means you can kill same enemy 100 times and no rare item drops or you can kill it 3 times and you will have luck to drop although I had to kill it more or less times.
List of Bosses and Masters without confirmed unique or rare drop can be found here: Blog post
Sector 1[]
Corman's Theories[]
- I had to kill Doctor Corman approx 40 times in a row. Good thing is that he drops also Box of Salvaged Fasteners.
Dancer's Sword[]
- I had to kill Loki approx 70 times not in a row.
- Surtur appears only during active mission "Down in Flames" and Thor appears only during active mission "Silence the Thunder". It is possible to grind them with friend (he has active missions and you kill bosses, you may not be in the team to avoid completing missions). I had to kill both together approx 50 times in a row, rare item dropped by Surtur.
Depleted Radioactive Core[]
- I had to kill Bongo approx 70 times not in a row.
- Mutant Overlords and Mutant Slavemasters are at same location, total 25-30 of them inside New Toro facility. I had to kill approx 120 bosses, rare item dropped by Mutant Slavemaster.
- Ralphie appears only during active mission "Rage Against the Machine". It is possible to grind him solo because if you don't take Slimy Code Piece from his corpse he will respawn. I had to kill him approx 40 times in a row.
- Twisted Mutant can randomly appear in area around New Toro facility instead of normal mutants, maximum spawn is 3 bosses at once (serendipity mob). I had to kill him approx 140 times not in a row.
- Argus has more HP than other bosses around and appears only during active mission "Mutant Uprising". It is possible to grind him with friend, I had to kill him approx 90 times in a row.
Empowered Ichor[]
- Black Broodmothers and Bloated Broodmothers are at same location, total 6-8 of them around Spider Hill. I had to kill approx 80 bosses, rare item dropped by Bloated Broodmother.
Glowing Venom[]
- I had to kill Monstrous Brood Queen approx 220 times not in a row.
Goat Sucker Tongue[]
- Chupacabras is first of the four bosses in the category World Bosses, his respawn time is at a minimum of 1 hour after death and a maximum of 3 hours after death. I had to kill him approx 110 times not in a row. Good thing is that he drops also Box of Scrap Fasteners.
Her Majesty's Knife[]
- Black Ant Queen level 8 has random or bugged respawn because it can take randomly from minutes to hours. Good thing is that she drops also Putrid Black Ant Queen Abdomen. I had to kill her approx 50 times not in a row.
- Midway Plains Ant Queen has fast respawn, I had to kill her approx 60 times in a row. Good thing is that she drops also Squishy Red Ant Queen Abdomen.
LifeNet Control Unit[]
- I had to kill Gruntle approx 80 times in a row.
Mangled Censer[]
- Arbiter Reinhold Coleman appears only during active mission "A House Divided". It is possible to grind him with friend, I had to kill him approx 400 times not in a row.
Regenerative Fungus Graft[]
- I had to kill Deathspore approx 140 times not in a row.
Reinforced Prison Jacket[]
- I had to kill "Teeth" approx 60 times in a row.
- Lieutenant Grinder has more HP than "Teeth" and he can spawn also lot of guards around. Good thing is that he drops also Box of Scrap Fasteners. I had to kill him approx 90 times not in a row.
Sandworm Heart[]
- I had to kill Glusharg the Earth Reaper approx 110 times in a row. Good thing is that he drops also Box of Scrap Fasteners.
Sandworm Tooth[]
- Gulp appears only during active mission "The Biggest Bait". It is possible to grind him with friend, I had to kill him approx 130 times in a row.
Sasquatch Choke Collar[]
- Project 432 is second of the four bosses in the category World Bosses, his respawn time is at a minimum of 30 minutes after death and a maximum of hour after death. I had to kill him approx 140 times not in a row. Good thing is that he drops also Box of Scrap Fasteners. Bad thing is that he is located in pvp zone so you will get strong sector 1 pvp debuff and also you need to kill 6 guards to release him from the cage and be able to attack him.
VCR Manual Most Holy[]
- I had to kill Brother Torg and Sister Dram together approx 130 times not in a row, rare item dropped by Sister Dram.
- I had to kill Brother Crypt approx 80 times not in a row.
Zombie Flesh Graft[]
- Bull Dozer appears only during active mission "Invade Your Space". It is possible to grind him with friend, I had to kill him approx 80 times in a row.
Sector 2[]
Beast Charm[]
- I had to kill Lizard Dog Alpha approx 40 times not in a row.
- I had to kill Chupacabra Alpha approx 30 times in a row.
- I had to kill Giant Carrier Rat approx 90 times in a row.
Bloodsucker Talisman[]
- Father Gray appears only during active mission "Father Gray". It is possible to grind him with friend, I had to kill him approx 30 times in a row.
Brimstone[]
- I had to kill General Lester Ruth approx 150 times not in a row. Good thing is that he drops also Box of Salvaged Fasteners.
- Due to information, that Polkovnik Dasha Tucker should also drop this item, I had to kill her approx 80 times in a row. In my opinion her main rare drop should be only Pale Raven because Brimstone is main rare drop of General Lester Ruth. There is probably wrong setup of loot so she drops both items.
Coyote Tassel[]
- I can say that getting this unique item was hardest of all because West Kaibab King Coyote can randomly appear in Northfields-Kaibab Wastes area instead of normal coyotes (serendipity mob). I had to kill him approx 120 times not in a row but I also had to kill thousands of normal coyotes in area to "spawn" boss. Thanks for assistance of Sunshine Mira.
Eddings's Tumor[]
- Professor Eddings appears only during active mission "Stop Worrying and Love the Bomb". This mission is instanced and repeatable so it is possible to grind boss by reseting instance or retaking quest. I got rare item from first kill. After that I tried to kill boss 4 times and got another 4 items. Seems this drop is 1:1 (dropped always).
Idol of Worship[]
- Mother Larissa appears only during active mission "Their Darkened Shrines". This mission is instanced and repeatable so it is possible to grind boss by reseting instance or retaking quest. I had to kill her approx 70 times in a row. Good thing is that she drops also Box of Salvaged Fasteners.
Man-Eater's Paw[]
- I had to kill Man-Eater approx 40 times in a row.
Pale Raven[]
- I had to kill Polkovnik Dasha Tucker approx 100 times in a row. Good thing is that she drops also Brimstone and Box of Salvaged Fasteners.
Perdition[]
- Union Blockade Commander is third of the four bosses in the category World Bosses, her respawn time is at a minimum of 1 hour after death and a maximum of 3 hours after death. I had to kill her approx 70 times not in a row.
Sasquatch Hide Armor[]
- I had to kill Huge Sasquatch approx 20 times in a row.
Shell Armor[]
- I had to kill Snips approx 30 times in a row.
The Goo[]
- Geiger is fourth of the four bosses in the category World Bosses, his respawn time is at a minimum of 1 hour after death and a maximum of 3 hours after death. I had pretty luck here, I had to kill him only 5 times in a row to get rare item.
This Bites[]
- Mutated Giant Spider appears only during active mission "Pest Poachers". It is possible to grind him with friend, I had to kill him approx 90 times in a row. Good thing is that he has respawn time 20-30 seconds.
Treasure Maps[]
- I had to kill Treasure Hunter Captain approx 90 times in a row. Good thing is that he drops also Box of Salvaged Fasteners.
Union Battle Vest[]
- I had to kill Superintendent Bill Richards approx 60 times in a row. Good thing is that he drops also Box of Salvaged Fasteners.
Vial of Sacred Blood[]
- I had to kill Crimson Initiate approx 20 times in a row.
Sector 3[]
Altered Shiva Strain[]
- I had to kill Banshee Queen approx 70 times not in a row.
Apeshit Axe[]
- I had to kill Pounder approx 50 times in a row.
Aro Sei's Medal of Loyalty[]
- Big Porkupine, Chupacabra, LizardDog and Throwback appear only during active mission "More Work to Do". These four types of boss change randomly at one spot. Although mission is instanced, boss respawn inside Redstone Research Facility after 3-5 minutes. For faster grind you can reset instance. I had to kill him approx 70 times in a row, rare item dropped by Chupacabra. Another time I had to kill him approx 100 times not in row and rare item dropped by LizardDog. Good thing is that he drops also Box of Common Fasteners and there is also chance to get G.O.R.E. book.
Beast Cutter[]
- I had to kill Alpha Blight Wolf approx 60 times in a row.
Brigg's Point Beast Trophy[]
- I had to kill Blight Wolf Progenitor approx 120 times in a row.
- I had to kill Finhead approx 70 times in a row.
- I had to kill Ripjaw approx 30 times not in a row.
- I had to kill Infuriated Sasquatch and Monstrous Sasquatch together 110 times, rare item dropped by Monstrous Sasquatch.
- I didn't try grind Cerberus and Grendel Patriarch but my friend confirmed drops.
Good thing is that there is also chance to get G.O.R.E. book from all of these bosses.
El Cadejo's Claw[]
- I had to kill El Cadejo 2 times in a row. After that I had to kill him 9 times and got another 2 items. Seems this drop is approx 1:4. Good thing is that there is also chance to get G.O.R.E. book.
Emblem of Erudition[]
- I had to kill Doctor Kirsh, Professor Emeritus Smith and Professor Thornberg together 70 times in a row, rare item dropped by Doctor Kirsh. My friend confirmed drop from Professor Emeritus Smith. Good thing is that they drop also Box of Common Fasteners.
Executioner's Axe[]
- The Executioner appears only during active mission "Slay the Executioner". It is possible to grind him because you can reset instance before you will return to private Carroll. I had to kill him approx 130 times in a row.
Judge's Padded Tunic[]
- I had to kill Elite Arbiter Haddon approx 60 times in a row.
Monkeytown Aid Packages Manual and MOPP 7 Mask[]
- Bosses appear only during active mission "Beginning of Things Ending". This mission is instanced and repeatable so it is possible to grind bosses by reseting instance or retaking quest (in this case retaking is not good way because quest giver is not close to facility). I mostly recommend to grind Earthbound Chemist with friend on level 35-39 because then boss is weaker then other type of bosses on higher level and if you kill him without killing Sotnik Makari you can reset instance and repeat it without completing quest. I noticed lowest drop rate have MOPP 7 Mask and Monkeytown Aid Packages Manual. After 80 kills of Earthbound Chemist in a row I got approx 20 masks and 2 manuals.
Other items like Ape Goad, Biological Testing Kit, Euthanasia-in-a-Bottle, Mad Gorilla Defense Cuirass and Primate Pheromones from all bosses on each possible level were dropped approx 1:4 and maximum amount was 3 items of each type at once.
Rothium Battery[]
- Edarath appears only during active mission "Path of the Mighty". It is possible to grind him with friend, I had to kill him approx 30 times in a row. Good thing is that he drops also Box of Common Fasteners.
Slaith's Chew Toy and Blight Wolf Tail[]
- I had to kill Slaith 7 times in a row and got 2x Slaith's Chew Toy and 3x Blight Wolf Tail. Both items can be dropped at once. Seems these drops are approx 1:4.
Sludge Symbiote[]
- The Eater appears only during active mission "Frost and Flame". It is possible to grind him with friend, I had to kill him approx 60 times in a row. Thanks for assistance of Sunshine Mira.
Tenets of True Death[]
- I had to kill Cult of the Dead Master approx 80 times in a row. Good thing is that he drops also Box of Common Fasteners.
Throwback Smasher[]
- Throwback Rager appears only during active mission "The Greater Share of Honor". It is possible to grind him with friend, I had to kill him approx 160 times not in a row. Later it took me approx 80 kills in a row to get another item.
Tribulation[]
- I had to kill Liza Benedict approx 90 times not in a row.
- Robert Benedict appears only during active mission "Data Mining", "Fight the Power", "Wisdom of the Children" or "Hunt Robert Benedict". All missions are instanced so it is possible to grind him by reseting instance or retaking quest. I had to kill him approx 70 times in a row.
- Sally Benedict, Susan Benedict and Rhiata Benedict appear only during active mission "Fight the Power". This mission is instanced so it is possible to grind bosses by reseting instance or retaking quest. In this mission I recommend grind Rhiata Benedict before you kill Sally and Susan because she is only one boss who will respawn there. Respawn time is also fast, approx 5 seconds. I had to kill Rhiata approx 40 times in a row. I never grind Sally and Susan but seems all Benedict family members can drop this item due to same surname and level.
Ursine Fury[]
- I had to kill Ursaline approx 200 times not in a row.
Vulgate Judicarum[]
- I had to kill Arbiter Trian Hurley approx 50 times in a row.
White Crow Body Armor[]
- I had to kill Kapitan Nicolai Green and Polkovnik Gerhalt Stein together approx 80 times in a row, rare item dropped by Polkovnik Gerhalt Stein.
- I had to kill White Crow Kapral and White Crow Starshina together approx 90 times not in a row, rare item dropped by White Crow Starshina. I don't recommend these two bosses because they can randomly appear in Raven's Roost area instead of White Crow Vojak or White Crow Soldat (serendipity mobs)
- I had to kill Karaul Vassili Seung approx 50 times not in a row.
Terminal Woods[]
Fuzzy Bunny Pistol and Fuzzy Bunny Shotgun[]
- I had to kill Speedy 10 times in a row. Drops were 6x shotgun and 4x pistol. Seems these items are randomly dropped in 1:2. That means every boss always drops one item from these two.
Lucky Earthwalker Toe, Deformed Hexweave Helm and Deformed Mesoprene Helmet[]
- With team of few players we had to kill Earthwalker 12 times in a row. Drops were 4x Lucky Earthwalker Toe, 6x Deformed Mesoprene Helmet and 2x Deformed Hexweave Helm. Seems these items are randomly dropped in 1:3. That means every boss always drops one item from these three and 1-3x Impure Volatile Chemical. Good thing is that there is also chance to get G.O.R.E. book.